toffee crisp syns?

My partner bought me a toffee crisp normal size bar.. but i'm a little unsure of how to syn it as it doesnt have a size on it
Ive looked in the directory and it has three sizes;
18gbar, 28gbar and a 44gbar?
Any ideas?
Ty in advance x

Just found a similar thread..

http://www.minimins.com/slimming-world/105671-toffee-crisp.html

Luckly I didn't have too many syns yesterday, so I've just about got away with it